The maximum available force will vary by the length of the arm used or diameter of the capstan employed. Standard arm servos and long arm servos (denoted by an “L” suffix) differ only in the length of their output arms. "L" servos allow for slightly more travel in aircraft that require it, at the expense of a small amount of available force at the longer arm attach points. Due to the decrease in available force, long arm servo models should generally only be used in aircraft that require them.

+

<br />

+

The maximum available force will vary by the length of the arm used or diameter of the capstan employed. Standard arm servos and long arm servos (denoted by an “L” suffix) differ only in the length of their output arms. "L" servos allow for slightly more travel in aircraft that require it, at the expense of a smaller amount of available force at the longer arm attach points. Due to the decrease in available force, long arm servo models should generally only be used in aircraft that require them.

Capstan Servos: Servos that are equipped with a capstan for use in cable control systems are denoted by the "C" suffix. Popular aircraft that use these types of servos include the Zenith 601 (on the pitch axis), the Glasair Glastar series, and the Murphy Moose.

Capstan Servos: Servos that are equipped with a capstan for use in cable control systems are denoted by the "C" suffix. Popular aircraft that use these types of servos include the Zenith 601 (on the pitch axis), the Glasair Glastar series, and the Murphy Moose.

* Consider writing a new wiki article under the appropriate servo application guide on this page, documenting your install.

* Consider writing a new wiki article under the appropriate servo application guide on this page, documenting your install.

−

= Aircraft Servo Configurations =

= Aircraft Servo Configurations =

−

==Czech Sport Aircraft SportCruiser==

+

==RV-3==

{| border="1" cellspacing="0" cellpadding="2"

{| border="1" cellspacing="0" cellpadding="2"

Line 78:

Line 78:

|-

|-

!Roll

!Roll

−

|From Czech Sport Aircraft

+

|No

+

|SV32

+

|

+

|No

+

|-

+

!Pitch

+

|No

|SV32

|SV32

−

|TBD

+

|

+

|No

+

|}

+

+

Though the RV-3 has not been tested, Dynon expects good performance - similar to the rest of the tested RV line - from a pair of SV32 servos.

+

+

==RV-4==

+

+

{| border="1" cellspacing="0" cellpadding="2"

+

! Axis

+

! Dynon Mounting Kit Available

+

! Suggested Servo Type

+

! Suggested Arm Attach Point

+

! Known to work?

+

|-

+

!Roll

+

|No

+

|SV42

+

|

|Yes

|Yes

|-

|-

!Pitch

!Pitch

−

|From Czech Sport Aircraft

+

|Yes

|SV32

|SV32

−

|TBD

+

|

−

|Yes

+

|Yes

|}

|}

−

Many Installations in this popular aircraft. LAA (UK) Modification Approval Process currently in progress as at May 2009.

+

A mounting kit is available for RV-4 pitch axis only. Dynon does not currently have plans to produce a roll mounting kit. However, when installed, the SV42 is known to produce good results.

+

+

Customer aircraft of this type flew the autopilot in the Dynon test/development program with good results.

==RV-6==

==RV-6==

Line 133:

Line 159:

!Pitch

!Pitch

|Yes

|Yes

−

|SV32

+

|SV32

|Outer

|Outer

|Yes

|Yes

Line 151:

Line 177:

!Roll

!Roll

|Yes

|Yes

−

|SV32

+

|SV32

|Outer

|Outer

|Yes

|Yes

Line 157:

Line 183:

!Pitch

!Pitch

|Yes

|Yes

−

|SV32

+

|SV32

|Outer

|Outer

|Yes

|Yes

Line 164:

Line 190:

Customer aircraft of this type flew the autopilot in the Dynon test/development program with good results.

Customer aircraft of this type flew the autopilot in the Dynon test/development program with good results.

−

Mounting Kit part number 101098-005 fits both the classic RV-8 kits and the the newer "RV-8 Fuselage Kit - 1" that started shipping around September 2006.

+

Mounting Kit part number 101020-002 (Pitch) and 101020-003 (Roll) fit both the classic RV-8 kits and the the newer "RV-8 Fuselage Kit - 1" that started shipping around September 2006.

==RV-9==

==RV-9==

Line 207:

Line 233:

!Pitch

!Pitch

|Yes

|Yes

−

|SV42

+

|SV42T

−

|TBD

+

|N/A

|Yes

|Yes

|}

|}

−

+

==RV14==

−

A mounting kit is currently available for RV-10 roll axis only, as it shares this mounting kit with the RV-7/8. A mounting kit for the pitch axis is under development and coming soon.

−

−

However, neither the servo configuration or roll mounting kit has yet been tested in an aircraft.

−

−

==RV-4==

{| border="1" cellspacing="0" cellpadding="2"

{| border="1" cellspacing="0" cellpadding="2"

Line 226:

Line 247:

|-

|-

!Roll

!Roll

−

|No

+

|Yes

−

|SV32

+

|SV42

|

|

|Yes

|Yes

Line 237:

Line 258:

|Yes

|Yes

|}

|}

−

−

A mounting kit is available for RV-4 pitch axis only. Dynon does not currently have plans to produce a roll mounting kit. However, when installed, the SV32 is known to produce good results.

Customer aircraft of this type flew the autopilot in the Dynon test/development program with good results.

Customer aircraft of this type flew the autopilot in the Dynon test/development program with good results.

−

−

==RV-3==

−

−

{| border="1" cellspacing="0" cellpadding="2"

−

! Axis

−

! Dynon Mounting Kit Available

−

! Suggested Servo Type

−

! Suggested Arm Attach Point

−

! Known to work?

−

|-

−

!Roll

−

|No

−

|SV32

−

|

−

|No

−

|-

−

!Pitch

−

|No

−

|SV32

−

|

−

|No

−

|}

−

−

Though the RV-3 has not been tested, Dynon expects good performance - similar to the rest of the tested RV line - from a pair of SV32 servos.

−

==Sonex==

==Sonex==

Line 278:

Line 272:

!Roll

!Roll

|No

|No

−

|SV32

+

|SV42

|

|

|Yes

|Yes

Line 289:

Line 283:

|}

|}

−

Customer aircraft of this type flew the autopilot in the Dynon test/development program with good results.

+

==Searey==

−

−

==SeaRey==

{| border="1" cellspacing="0" cellpadding="2"

{| border="1" cellspacing="0" cellpadding="2"

Line 315:

Line 307:

Customer aircraft of this type flew the autopilot in the Dynon test/development program with good results.

Customer aircraft of this type flew the autopilot in the Dynon test/development program with good results.

−

This aircraft exhibits significant adverse yaw with the roll servo connected to the ailerons. There is also significant roll/yaw coupling. Testing demonstrated that the "roll" servo performs at least as well, and will less adverse yaw, when connected to the rudder.

+

Pre 2015 aircraft exhibits significant adverse yaw with the roll servo connected to the ailerons. There is also significant roll/yaw coupling. Testing demonstrated that the "roll" servo performs at least as well, and will less adverse yaw, when connected to the rudder.

+

+

Aircraft kits produced since approx 2015 have Frise-type ailerons and exhibit little or no adverse yaw ([http://dynonavionics.com/cgi-bin/yabb2/YaBB.pl?num=1494106535/0#0 source]) . In these aircraft, conventional connection to the ailerons is recommended.

Important Supplemental Information

To order autopilot hardware, download our complete price list / order form. Fax your order to Dynon Avionics, or use it to organize before calling us at 425-402-0433.

Except where a configuration has been specifically noted to be known to work, servo suggestions are generally Dynon's best estimates based on all obtainable data at the time. As such, the servos indicated may or may not actually be the most suitable for each aircraft type. Dynon will swap out servos for alternate models should a customer find that a particular servo is sub-optimal in some way.

The maximum available force will vary by the length of the arm used or diameter of the capstan employed. Standard arm servos and long arm servos (denoted by an “L” suffix) differ only in the length of their output arms. "L" servos allow for slightly more travel in aircraft that require it, at the expense of a smaller amount of available force at the longer arm attach points. Due to the decrease in available force, long arm servo models should generally only be used in aircraft that require them.

Capstan Servos: Servos that are equipped with a capstan for use in cable control systems are denoted by the "C" suffix. Popular aircraft that use these types of servos include the Zenith 601 (on the pitch axis), the Glasair Glastar series, and the Murphy Moose.

Choosing Servos

There are a few different requirements that need to be met when choosing an autopilot servo. First, the servo employed must be able to attach to the control system safely, without decreasing control surface range-of-motion, and especially without allowing for an over-center condition. Generally, to prevent the possibility of the servo arm going over center, the servo arm must not travel more than a total of +/-60º from neutral
throughout the control system's range of travel.

Additionally, the servo must be large enough to be able to drive the control surface effectively. Dynon's servos are designed to gracefully "slip" when the torque that the servo is providing is insufficient to drive the control surface. So if servo torque is insufficient for the application, it will continuously slip, the autopilot will not be able to effectively control the aircraft.

As the torque output can be adjusted in the autopilot software setup, you may be tempted to simply buy the biggest servo available and turn down the torque. This is not ideal for a couple of reasons. First, when the servos are disengaged, there is a very small amount of residual drag on the control system. As larger servos have higher residual drags, it is desirable to choose the smallest servo that can fully control the aircraft control surface. Additionally, since larger servos have bigger motors on them, they weigh slightly more as well.

So, what you are ultimately after is the smallest servo that can can successfully drive your control surface.

The aircraft configurations below are a mix of actual tested configurations and untested estimates based on the best information available to Dynon Avionics.

Specific servo/aircraft combination that have been found to work well in actual customer installations on are marked as "known to work" in the tables below, and are likely to work in your aircraft of the same type if it is a fairly standard example of that type of aircraft.

For aircraft that are not tagged as "known to work" in the tables below, Dynon's servo suggestions are estimates only. If you purchase servos and discover that they are not ideal (for example, you need more torque), Dynon will swap out servos at no charge.

If your aircraft is not listed at all in the tables below, Dynon has not performed any analysis on your aircraft type. In these cases, it might be helpful to review the suggested configuration for similar aircraft types. Keep in mind that aircraft with cable control systems will require servos equipped with capstans, which are not initially available.

Share information about your installation with Dynon!

If you have new data about an installation in a particular aircraft type, here are some ways to share what you've learned:

Share your installation pictures, notes, and hardware list with us by emailing them to betatest@dynonavionics.com, so we can learn from your experience. Customer installation notes will be invaluable for us as we continue to design mounting kits.

Share your installation documentation on the forum (forum.dynonavionics.com) under the Autopilot Installations section, so other users with similar aircraft can learn from and critique your install.

Add or update your aircraft's servo application guide on this page with notes about performance, etc.

Consider writing a new wiki article under the appropriate servo application guide on this page, documenting your install.

Aircraft Servo Configurations

RV-3

Axis

Dynon Mounting Kit Available

Suggested Servo Type

Suggested Arm Attach Point

Known to work?

Roll

No

SV32

No

Pitch

No

SV32

No

Though the RV-3 has not been tested, Dynon expects good performance - similar to the rest of the tested RV line - from a pair of SV32 servos.

RV-4

Axis

Dynon Mounting Kit Available

Suggested Servo Type

Suggested Arm Attach Point

Known to work?

Roll

No

SV42

Yes

Pitch

Yes

SV32

Yes

A mounting kit is available for RV-4 pitch axis only. Dynon does not currently have plans to produce a roll mounting kit. However, when installed, the SV42 is known to produce good results.

Customer aircraft of this type flew the autopilot in the Dynon test/development program with good results.

RV-6

Axis

Dynon Mounting Kit Available

Suggested Servo Type

Suggested Arm Attach Point

Known to work?

Roll

Yes

SV32L

Outer

Yes

Pitch

Yes

SV32

Outer

Yes

Customer aircraft of this type flew the autopilot in the Dynon test/development program with good results.

RV-7

Axis

Dynon Mounting Kit Available

Suggested Servo Type

Suggested Arm Attach Point

Known to work?

Roll

Yes

SV32

Outer

Yes

Pitch

Yes

SV32

Outer

Yes

Customer aircraft of this type flew the autopilot in the Dynon test/development program with good results.

RV-8

Axis

Dynon Mounting Kit Available

Suggested Servo Type

Suggested Arm Attach Point

Known to work?

Roll

Yes

SV32

Outer

Yes

Pitch

Yes

SV32

Outer

Yes

Customer aircraft of this type flew the autopilot in the Dynon test/development program with good results.

Mounting Kit part number 101020-002 (Pitch) and 101020-003 (Roll) fit both the classic RV-8 kits and the the newer "RV-8 Fuselage Kit - 1" that started shipping around September 2006.

RV-9

Axis

Dynon Mounting Kit Available

Suggested Servo Type

Suggested Arm Attach Point

Known to work?

Roll

Yes

SV32

Middle

Yes

Pitch

Yes

SV32

Outer

Yes

Customer aircraft of this type flew the autopilot in the Dynon test/development program with good results.

RV-10

Axis

Dynon Mounting Kit Available

Suggested Servo Type

Suggested Arm Attach Point

Known to work?

Roll

Yes

SV42

TBD

Yes

Pitch

Yes

SV42T

N/A

Yes

RV14

Axis

Dynon Mounting Kit Available

Suggested Servo Type

Suggested Arm Attach Point

Known to work?

Roll

Yes

SV42

Yes

Pitch

Yes

SV32

Yes

Customer aircraft of this type flew the autopilot in the Dynon test/development program with good results.

Sonex

Axis

Dynon Mounting Kit Available

Suggested Servo Type

Suggested Arm Attach Point

Known to work?

Roll

No

SV42

Yes

Pitch

No

SV32

Yes

Searey

Axis

Dynon Mounting Kit Available

Suggested Servo Type

Suggested Arm Attach Point

Known to work?

Roll

No

SV42

Yes

Pitch

No

SV42

Yes

Customer aircraft of this type flew the autopilot in the Dynon test/development program with good results.

Pre 2015 aircraft exhibits significant adverse yaw with the roll servo connected to the ailerons. There is also significant roll/yaw coupling. Testing demonstrated that the "roll" servo performs at least as well, and will less adverse yaw, when connected to the rudder.

Aircraft kits produced since approx 2015 have Frise-type ailerons and exhibit little or no adverse yaw (source) . In these aircraft, conventional connection to the ailerons is recommended.

BD-4

Axis

Dynon Mounting Kit Available

Suggested Servo Type

Suggested Arm Attach Point

Known to work?

Roll

No

SV42C (now available!)

Not Applicable (capstan)

Yes

Pitch

No

SV42

Yes

Customer aircraft of this type flew the autopilot in the Dynon test/development program with good results. Aircraft has significant adverse yaw that is apparent but controllable by the autopilot.

This aircraft exhibits significant adverse yaw with the roll servo connected to the ailerons. There is also significant roll/yaw coupling. Testing demonstrated that the "roll" servo can alternatively be hooked to the rudder to effectively control the aircraft.

Cozy

Axis

Dynon Mounting Kit Available

Suggested Servo Type

Suggested Arm Attach Point

Known to work?

Roll

No

SV32

Unknown

No

Pitch

No

SV42

Unknown

No

No known installations. Servo suggestions based on available data.

Europa

Axis

Dynon Mounting Kit Available

Suggested Servo Type

Suggested Arm Attach Point

Known to work?

Roll

No

SV32

Outer

Yes

Pitch

No

SV32

Outer

Yes

Tested on an installation similar to MOD75 & MOD76 of Europa.

Roll servo: TORQUE=100%, SENSITIVITY=20, TRN RT LMT=0, BANK LIMIT=20

Express

Axis

Dynon Mounting Kit Available

Suggested Servo Type

Suggested Arm Attach Point

Known to work?

Roll

No

SV42

Unknown

No

Pitch

No

SV42

Unknown

No

No known installations. Servo suggestions based on available data.

F-1/Harmon Rocket

Axis

Dynon Mounting Kit Available

Suggested Servo Type

Suggested Arm Attach Point

Known to work?

Roll

No

SV32

Unknown

No

Pitch

No

SV32

Unknown

No

No known installations. Servo suggestions based on available data.

Falco

Axis

Dynon Mounting Kit Available

Suggested Servo Type

Suggested Arm Attach Point

Known to work?

Roll

No

SV32

Unknown

No

Pitch

No

SV32

Unknown

No

No known installations. Servo suggestions based on available data.

Glasair II/III

Axis

Dynon Mounting Kit Available

Suggested Servo Type

Suggested Arm Attach Point

Known to work?

Roll

No

SV32

Unknown

No

Pitch

No

SV32

Unknown

No

No known installations. Servo suggestions based on available data.

Glasair Glastar and Sportsman

Axis

Dynon Mounting Kit Available

Suggested Servo Type

Suggested Arm Attach Point

Known to work?

Roll

No

SV42C (now available!)

Not Applicable (capstan)

Yes

Pitch

No

SV42C (now available!)

Not Applicable (capstan)

Yes

Customer Glastar Sportsman 2+2 flew the autopilot in the Dynon test/development program with good results.

Lancair 235/260/320/Legacy

Axis

Dynon Mounting Kit Available

Suggested Servo Type

Suggested Arm Attach Point

Known to work?

Roll

No

SV32

Yes

Pitch

No

SV32

Yes

Customer Lancair 320 flew the autopilot in the Dynon test/development program with good results.